This 2010 997 911 Carrera S cabriolet looks innocuous enough from the outside with the roof up, but peering inside will result in many a gasp.

The interior has been extensively modified so that there is only one front seat, located in the middle like a McLaren F1. Accordingly, the steering wheel is now in the middle, with the rest of the dash surrounding the relocated switchgear finished in carbon fibre.

There are a few compromises to this PDK-equipped unicorn Porsche, the rear occupants would have to sit awkwardly as their legroom is fouled by the relocated single seat, but when you have something this unique, why would you want to ruin the experience with passengers?

The Roswell, Georgia-located car has had four owners, has 15,836 miles on the clock (25,485km) and there’s probably nothing else like it. We could guess a central driving position would further enhance the sense of balance and agility of the 911, and the car reminds us somewhat of the Lamborghini Egoista. You can check out the ad on CARFAX for more info.

Mitchell is a contributing journalist and features writer at PerformanceDrive. He has been a passionate petrol-head from a very young age. He is excited by the future of the industry, and considers himself as a bit of a fanatic when it comes to the technical aspects of cars. He is also fascinated by new cars that are popping up in developing markets.